Try

SELECT t_date, user, COUNT(DIST pay_track), SUM(payment)  FROM u_hpay ;
	GROUP BY t_date, user  INTO ARRAY uhp_tmp

>Hello Foxperts,
>
>Working in FPD/2.5 (!), I've got most of what I need from this statement:
>

SELECT t_date, user, COUNT(pay_track), SUM(payment)  FROM u_hpay ;
>	GROUP BY t_date, user  INTO ARRAY uhp_tmp

>The COUNT() is the focus of this question:
>I'm getting the number of pay_track entries (as expected).
>How can I get the number of unique pay_track entries?
>TIA,